如何在swift中创建属性方法

Question

我在我的类中创建了一个 UITableView 属性，并为它创建了 getter 方法，如下所示：

@interface SideViewController : UIViewController <UITableViewDataSource,UITableViewDelegate>
@property (nonatomic,strong) UITableView *table;
@end


@implementation SideViewController
@synthesize selectedIndex;
- (void)viewDidLoad {
  [super viewDidLoad];
  self.view.backgroundColor = [UIColor redColor];
}
- (UITableView*)table {
  if (!_table) {
    CGRect tableFrame = CGRectMake(0,150,230, self.view.frame.size.height-150);
    _table = [[UITableView alloc]initWithFrame:tableFrame style:UITableViewStylePlain];
    _table.scrollEnabled = NO;
    _table.delegate = self;
    _table.dataSource = self;
    _table.showsVerticalScrollIndicator = YES;
    _table.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0);
    [_table setBackgroundColor:[UIColor clearColor]];
    _table.separatorStyle = UITableViewCellSeparatorStyleNone;
  }
  return _table;
}

当我打电话给self.table 拿到我的桌子时，我想用 swift 编写这段代码，但我很困惑！！！ 请指导我。 这是我的快速代码：

import UIKit

class SideViewController: UIViewController,UITableViewDelegate {

  let table:UITableView = UITableView()

  override func viewDidLoad() {
    super.viewDidLoad()
    self.view.backgroundColor = UIColor.redColor()

  }


  override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
  }

}

Answer 1

你可以在swift中使用lazy：

class SideViewController: UIViewController, UITableViewDelegate {

    lazy var table: UITableView = {
        let tableFrame = CGRectMake(0, 150, 230, self.view.frame.size.height - 150)
        let _table = UITableView(frame: tableFrame, style: UITableViewStyle.Plain)
        _table.scrollEnabled = false
        _table.delegate = self
        _table.dataSource = self
        _table.showsVerticalScrollIndicator = true
        _table.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0)
        _table.backgroundColor = UIColor.clearColor()
        _table.separatorStyle = UITableViewCellSeparatorStyle.None
        return _table
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.backgroundColor = UIColor.redColor()
    }

}